CN101488412B - Rotary encoder and method of manufacturing the same - Google Patents
Rotary encoder and method of manufacturing the same Download PDFInfo
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- CN101488412B CN101488412B CN2009100010214A CN200910001021A CN101488412B CN 101488412 B CN101488412 B CN 101488412B CN 2009100010214 A CN2009100010214 A CN 2009100010214A CN 200910001021 A CN200910001021 A CN 200910001021A CN 101488412 B CN101488412 B CN 101488412B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/11—Movable parts; Contacts mounted thereon with indexing means
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/02—Details
- H01H19/10—Movable parts; Contacts mounted thereon
- H01H19/20—Driving mechanisms allowing angular displacement of the operating part to be effective in either direction
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/54—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand the operating part having at least five or an unspecified number of operative positions
- H01H19/56—Angularly-movable actuating part carrying contacts, e.g. drum switch
- H01H19/58—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch
- H01H19/585—Angularly-movable actuating part carrying contacts, e.g. drum switch having only axial contact pressure, e.g. disc switch, wafer switch provided with printed circuit contacts
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H19/00—Switches operated by an operating part which is rotatable about a longitudinal axis thereof and which is acted upon directly by a solid body external to the switch, e.g. by a hand
- H01H19/005—Electromechanical pulse generators
- H01H2019/006—Electromechanical pulse generators being rotation direction sensitive, e.g. the generated pulse or code depends on the direction of rotation of the operating part
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- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Transmission And Conversion Of Sensor Element Output (AREA)
- Manufacture Of Switches (AREA)
- Contacts (AREA)
Abstract
The invention provides a rotary encoder and a method of manufacturing the same. The rotary encoder includes a case made of insulating resin, a rotatable operation shaft, a slidable brush fixed to the operation shaft, and a signal contact embedded in a surface of the case. The slidable brush has a contacting section sliding on a surface of the case on a predetermined circumference according to a rotation of the operation shaft. The signal contact has an upper surface flush with the surface of the case, a first side surface connected to the upper surface at a first corner having a right angle, a second side surface connected to the upper surface at a second corner having a right angle, and a lower surface opposite to the upper surface. The first and side surfaces are positioned on the predetermined circumference. The lower surface has a width smaller than a width of the upper surface. This rotary encoder has a small size and outputs a signal precisely.
Description
Technical field
The present invention relates to be used for the rotary encoder and the manufacture method thereof of operating electronic equipment.
Background technology
In recent years, various electronic equipments are popularized, and particularly use of input operation part such as the menu switching of automobile audio, volume adjusting rotary encoder are arranged more.For rotary encoder, that the requirement of its miniaturization, high precision int is strong.
Figure 10 and Figure 11 are respectively the profile and the exploded perspective views of the disclosed existing rotary encoder 501 of Japanese kokai publication hei 11-135310 communique.Operating axis 6 is made of shaping resin, has the columniform central cylindrical 6A of portion and from the outstanding annular flange portion 6B of the periphery of central columnar portion 6A.Be provided with the otch 6C of insertion operation with rotating disk on the top of the 6A of central cylindrical portion.Be provided with ratchet slot (Network リ Star Network Ditch) 6D at the upper surface of annular flange portion 6B with radial extension.By riveting the lower surface that slip brush 8 is fixed on annular flange portion 6B with the projection crushing.
Be inserted with the 6A of central cylindrical portion of operating axis 6 at the circular port 10A that is located at ratchet spring 10 central authorities.Periphery at circular port 10A is provided with the 10B of spring portion.10B of spring portion and the ratchet slot 6D Elastic Contact above the annular flange portion 6B.
Accessory 7 is installed is had roughly コ shape, be formed with medium pore.Accessory 7 is installed is had the 7A of foot, and with the teat 9A of bearing 9 from the outstanding upward mode of medium pore, from the upper side of bearing 9 bearing 9 and housing 1 are overlapped and sandwich.The front end that makes bight 7A in the mode of taking in operating axis 6 and slip brush 8 between bearing 9 and housing 1 is in the bending of the bottom surface of housing 1.
Figure 12 is the vertical view of the housing 1 of rotary encoder 501.Medium pore 1A is the circle with center 1D.Common contact 2 and signalling contact pattern 3,4 are the circumference 1E at center is fixed on recess 1B in the mode of inserting moulding bottom surface along the center 1D with medium pore 1A.Common contact 2 and signalling contact pattern 3,4 dispose on circumference 1E circular-arcly.
As shown in figure 12, signalling contact pattern 3 has the signalling contact 3A～3F of mutual conduction, and signalling contact pattern 4 has the signalling contact 4A～4F of mutual conduction.With the mode of the upper surface of the upper surface of signalling contact 3A～3F, 4A～4F and common contact 2 and the bottom surface coplane of the recess 1B of housing 1 with signalling contact pattern 3,4 and jointly contact 2 imbed the bottom surface of the recess 1B of housing 1.Signalling contact 3A～3F, 4A～4F are configured on the circumference 1E.Signalling contact 3A～3F is configured on circumference 1E with respect in the angular range of center 1D less than 180 degree.Signalling contact 4A～4F is configured on circumference 1E with respect in the angular range of center 1D less than 180 degree.The angular range that the angular range autogamy of disposing signalling contact 3A～3F is equipped with signalling contact 4A～4F separates and does not overlap.Common contact 2 disposes on circumference 1E circular-arcly.The central angle of the circular shape of common contact 2 is bigger with the angular range that disposes signalling contact 4A～4F than the angular range that disposes signalling contact 3A～3F.Signalling contact pattern 3 and signalling contact pattern 4 and common contact 2 are electrically insulated from each other, and are connected with terminal 11A from setting to the outside of housing 1, the 11B, the 11C that extend respectively.
Figure 13 is the vertical view of the housing that disposes slip brush 81 of rotary encoder 501.Slip brush 8 is made of the elastic metal sheet of conductivity, can be the center rotation with center 1D.Slip brush 8 has with contact site 81A, 81C, 81E, the 81G of the angle intervals settings that are 90 degree with respect to center 1D and is located at contact site 81B, 81D, 81F, the 81H of contact site 81A, 81C, 81E, 81G interior all sides separately.
Action for existing rotary encoder 501 describes.
By rotary manipulation operating axis 6, be fixed on slip brush 8 rotations of the annular flange portion 6B lower surface of operating axis 6.If 8 rotations of slip brush, then contact site 81A～81H slides in the bottom surface of the recess 1B of housing 1 along circumference 1E, and signalling contact 3A～3F, 4A～4F and 2 contacts of common contact also separate.Along the central angle of the circular shape of the common contact 2 of circumference 1E configuration greatly than 90 degree.Thus, no matter the angle position of slip brush 8 how, among contact site 81A～81H at least two contact with contact 2 jointly with common contact 2 brush 8 that contact, promptly slides.
The angular range that disposes signalling contact 3A～3F is littler than 90 degree, and the angular range that disposes signalling contact 4A～4F is also little than 90 degree.Contact site 81A, 81B simultaneously with signalling contact 3A～3F, 4A～4F and common contact 2 in one contact.Similarly, contact site 81C, 81D simultaneously with signalling contact 3A～3F, 4A～4F and common contact 2 in one contact.Similarly, contact site 81E, 81F simultaneously with signalling contact 3A～3F, 4A～4F and common contact 2 in one contact.Similarly, contact site 81G, 81H simultaneously with signalling contact 3A～3F, 4A～4F and common contact 2 in one contact.Four contact site 81A, 81C, 81E, 81G are with the angle intervals settings of 90 degree, and four contact site 81B, 81D, 81F, 81H are with the angle intervals settings of 90 degree, so as if making operating axis 6 revolve three-sixth turn and making slip brush 8 revolve three-sixth turn, then six actions that signalling contact 3A～3F carries out respectively contacting, separating via slip brush 8 and common contact 2 for four times repeatedly.Signalling contact 3A～3F is as signalling contact pattern 3 and mutual conduction, so by making operating axis 6 revolve three-sixth turn, signalling contact pattern 3 carries out 24 actions that are connected, separate with common contact 2 repeatedly.Similarly, as if making operating axis 6 revolve three-sixth turn and make slip brush 8 revolve three-sixth turn, then six actions that signalling contact 4A～4F carries out respectively being connected, separating via slip brush 8 and common contact 2 for four times repeatedly.Signalling contact 4A～4F is as signalling contact pattern 4 and mutual conduction, so by making operating axis 6 revolve three-sixth turn, signalling contact pattern 4 carries out 24 actions that are connected, separate with common contact 2 repeatedly.Therefore, by making operating axis 6 revolve three-sixth turn, utilize the conducting, non-conduction of 3 in common contact 2 and signalling contact pattern, output has the square wave A501 of 24 peak values between terminal 11A, 11B, utilize conducting between common contact 2 and the signalling contact pattern 4, non-conduction, output has the square wave A502 of 24 peak values between terminal 11A, 11C.
Make the operation rotating disk rotation that is installed on the operating axis 6, with controllers such as square wave A501, A502 input microcomputers.Rotary manipulation shaft encoder 501 is connected with controller, for example is used for the volume adjusting of automobile audio etc.At this moment, controller is the direction of rotation and the anglec of rotation of operating axis 6 from square wave A501, A502 detecting operation rotating disk, the volume of Control of Automobile sound equipment.
Figure 14 A is square wave A501, the A502 of expression rotary encoder 501 outputs, represents square wave A501, A502 by the switching on and off of switch that switches on and off, forms at the switch that forms between common contact 2 and the signalling contact pattern 3 respectively between common contact 2 and signalling contact pattern 4.The angle position of setting signal contact 3A～3F, 4A～4F and angle amplitude are so that square wave A501, A502 are with the phase difference output of 90 degree.By the combination of square wave A501, A502, produce that (1) square wave A501 connects and angle part θ 501 that square wave A502 disconnects, angle part θ 502, (3) square wave A501 that (2) square wave A501, A502 connect disconnect and angle part θ 503, angle part θ 504 these four angle part θ 501～θ 504 that (4) square wave A501, A502 disconnect that square wave A502 connects.Control part calculates the number of peaks of square wave A501, A502 with the direction of rotation of the order decision operation axle 6 of angle part θ 501～θ 504 generations.Control part is controlled controlling object by direction of rotation and number of peaks.When controlling object was the volume of automobile audio, control part decided the change direction that improves or reduce volume by direction of rotation, decided variable quantity by the quantity of peak value, made the variable quantity of volume change decision on the change direction of decision.
The length of angle part θ 501～θ 504 depends on the signalling contact 3A～3D along circumference 1E, the width of 4A～4D. Signalling contact pattern 3,4 is by being formed by the mould stamping-out processing metal plate that designs for the specific length that obtains angle part θ 501～θ 504.If the signalling contact pattern 3,4 that stamping-out processing is formed is imbedded the bottom surface of housing 1 and made rotary encoder 501, then has the situation of output and Figure 14 A different wave.Figure 14 B is that expression has stamping-out processing and the rotary encoder 501 of the signalling contact pattern 3,4 that forms replaces square wave A501, the A502 shown in Figure 14 A and the square wave A511, the A512 that export.Angle part θ 511 shown in Figure 14 B, θ 512, θ 513, θ 514 have respectively the connection identical with the angle part θ 501 shown in Figure 14 A, θ 502, θ 503, θ 504, the state of disconnection.Shown in Figure 14 A, it is desirable to, angle part θ 501～θ 504 is equal to each other.But, in fact, as shown in Figure 14B, especially angle part θ 512 is the narrowest among angle part θ 511, θ 512, θ 513, the θ 514, so rotary manipulation by operating axis 6, if the contact site 81A～81H of slip brush 8 shortened in the time that angle part θ 512 slides, then has the situation that microcomputer can not reading angular part θ 512 sometimes.
Figure 15 is the signalling contact 3A (profile along the direction of circumference 1E of 3B～3F, 4A～4F) of rotary encoder 501.Signalling contact 3A～the 3F, the 4A～4F that constitute signalling contact pattern 3,4 form by stamping-out processing metal plate.When the metallic plate that becomes signalling contact 3A being carried out stamping-out by mould, make it to be out of shape to the stretching of stamping-out direction by the upper surface end of its mould with signalling contact 3A, produce the 14B of limit portion that collapses in the end of upper surface.The 14B of limit portion carries out chamfering and forms fillet the end of upper surface collapsing.At the lower surface of signalling contact 3A, by blanking die the part of metal being stretched downwards produces the 14C of burr portion.The width L1 of the face 14A that the 3A of signalling contact portion exposes from the bottom surface of recess 1B is littler than the width L2 of signalling contact 3A.Therefore, the resin of housing 1 covers on the 14B of the limit portion of collapsing of signalling contact 3A.The width L2 of setting signal contact 3A is to obtain the Rack of angle part θ 501～θ 504.But, because the width L1 of the face 14A of the signalling contact 3A that exposes from the bottom surface of the recess 1B of housing 1 is shorter than the setting width L2 of signalling contact 3A, so in the rotation of operating axis 6, the angle part that slip brush 8 contacts with signalling contact 3A is littler than the angle part of regulation.Therefore, between common contact 2 and signalling contact pattern 3, the angle part of the switch connection of formation reduces between common contact 2 and the signalling contact 4.Thus, as shown in Figure 14B, the angle part θ 512 that square wave A511, A512 connect is littler than other angle parts θ 511, θ 513, θ 514.
In order to realize rotary encoder 501 miniaturizations, high precision int, need dwindle the width of signalling contact 3A～3F, 4A～4F and dwindle the interval of signalling contact 3A～3F, 4A～4F.The shape of the 14B of the limit portion of collapsing of signalling contact 3A～3D, 4A～4D changes according to the material of metallic plate and processing conditions and can not predict.Therefore, the 14B of limit portion that collapses becomes the miniaturization that hinders rotary encoder 501, the main cause of high precision int.
Summary of the invention
Rotary encoder of the present invention has: the housing of insulating resin system, rotatable operating axis, the signalling contact that is fixed on the conductivity slip brush on the operating axis and is embedded in the surface of housing.The contact site that the slip brush has along with the rotation of operating axis on the surface of housing, slides on predetermined circumference.Signalling contact has: with the upper surface surperficial in the same plane of housing; First side that is positioned on the described predetermined circumference and is connected with upper surface with first bight; Be positioned on the described predetermined circumference and be connected and be positioned at second side of the opposition side of first side with second bight with upper surface; Be positioned at the lower surface of the opposition side of upper surface.First, second bight is the right angle.The lower surface of signalling contact has the width littler than upper surface.
This rotary encoder can miniaturization and output signal accurately.
Description of drawings
Fig. 1 is the profile of the rotary encoder of embodiment of the present invention;
Fig. 2 is the exploded perspective view of the rotary encoder of execution mode;
Fig. 3 is the vertical view of housing of the rotary encoder of execution mode;
Fig. 4 is the vertical view of housing of the rotary encoder of execution mode;
Fig. 5 represents the signal of the rotary encoder output of execution mode;
Fig. 6 is the profile of signalling contact of the rotary encoder of execution mode;
Fig. 7 A and Fig. 7 B are the profiles of manufacture method of the rotary encoder of expression execution mode;
Fig. 8 is the vertical view of contact board hoop of signalling contact that is used to make the rotary encoder of execution mode;
Fig. 9 A and Fig. 9 B are the profiles of manufacture method of signalling contact of the rotary encoder of expression execution mode;
Figure 10 is the profile of existing rotary encoder;
Figure 11 is the exploded perspective view of existing rotary encoder;
Figure 12 is the vertical view of the housing of existing rotary encoder;
Figure 13 is the vertical view of the housing of existing rotary encoder;
Figure 14 A and 14B represent the signal of existing rotary encoder output;
Figure 15 is the profile of the signalling contact of existing rotary encoder.
Embodiment
Fig. 1 and Fig. 2 are respectively the profile and the exploded perspective views of the rotary encoder 1001 of embodiment of the present invention.Operating axis 6 is made of insulating resin, has the columniform central cylindrical 6A of portion and from the outstanding annular flange portion 6B of the periphery of central columnar portion 6A.Be provided with the otch 6C of insertion operation with rotating disk on the top of the 6A of central cylindrical portion.Be provided with ratchet slot (Network リ Star Network Ditch) 6D at the upper surface of annular flange portion 6B with radial extension.With projection slip brush 8 is fixed on the lower surface of annular flange portion 6B by the crushing riveted joint.
Be inserted with the 6A of central cylindrical portion of operating axis 6 at the circular port 10A that is located at ratchet spring 10 central authorities.Be provided with the 10B of spring portion of ring-type in the periphery of circular port 10A.The ratchet slot 6D Elastic Contact of the upper surface of 10B of spring portion and annular flange portion 6B, and when operating axis 6 rotary manipulations, produce suitable moment of torsion.
Accessory 7 is installed is had roughly コ shape, be formed with medium pore.Accessory 7 is installed is had the 7A of foot, and so that the upper side of the teat 9A of bearing 9 from the outstanding upward mode of medium pore from bearing 9 bearing 9 and housing 21 are overlapped and sandwich.The front end of the 7A of foot is bent at the bottom surface of housing 21 21G.
Fig. 3 is the vertical view of the housing 21 of rotary encoder 1001.Common contact 22 and signalling contact pattern 23,24 are the circumference 21E at center is fixed on recess 21B in the mode of inserting shaping bottom surface 21F along the center 21D with medium pore 21A.Common contact 22 and signalling contact pattern 23,24 dispose on circumference 21E circular-arcly.
As shown in Figure 3, signalling contact pattern 23 has the signalling contact 23A～23F of mutual conduction, and signalling contact pattern 24 has the signalling contact 24A～24F of mutual conduction.With the mode of the upper surface of the upper surface of signalling contact 23A～23F, 24A～24F and common contact 22 and the bottom surface 21F coplane of the recess 21B of housing 21 with signalling contact pattern 23,24 and jointly contact 22 imbed the bottom surface 21F of the recess 21B of housing 21.Signalling contact 23A～23F, 24A～24F are configured on the circumference 21E.Signalling contact 23A～23F is configured in the angular range A23 less than 180 degree with respect to center 21D on circumference 21E.Signalling contact 24A～24F is configured in the angular range A24 less than 180 degree with respect to center 21D on circumference 21E.The angular range A24 that the angular range A23 autogamy of disposing signalling contact 23A～23F is equipped with signalling contact 24A～24F separates and does not overlap.Common contact 22 disposes on circumference 21E circular-arcly.The central angle of the circular shape of common contact 22 is that angular range A22 is bigger with the angular range A24 that disposes signalling contact 24A～24F than the angular range A23 that disposes signalling contact 23A～23F.Angular range A22, A23, A24 are separated from each other and do not overlap.Signalling contact pattern 23 and signalling contact pattern 24 and common contact 22 are electrically insulated from each other, and are connected with terminal 11A from setting to housing 21 outsides, the terminal 11B, the terminal 11C that extend respectively.
Fig. 4 is the vertical view of the housing that disposes slip brush 8 21 of rotary encoder 1001.Slip brush 8 is made of the elastic metal sheet of conductivity, can be the center rotation with center 21D.Slip brush 8 has with contact site 81A, 81C, 81E, the 81G of the angle intervals settings that are 90 degree with respect to center 21D and contact site 81B, the 81D, 81F, the 81H that are provided with the angle intervals that are 90 degree with respect to center 21D.Contact site 81B, 81D, 81F, 81H misplace to the direction of center 21D from contact site 81A, 81C, 81E, 81G,, are arranged on contact site 81A, 81C, 81E, 81G interior all sides separately that is.Under state shown in Figure 4, contact site 81A, 81B and common contact 22 butts.The central butt of contact site 81C, 81D and signalling contact 24C.In contact site 81E, 81F and signalling contact 23A～23F, 24A～24F and the common contact 22 any be butt not.The end 123F butt of contact site 81G, 81H and signalling contact 23F.
Action to rotary encoder 1001 describes.
By rotary manipulation operating axis 6, be fixed on slip brush 8 rotations of the annular flange portion 6B lower surface of operating axis 6.Slip brush 8 rotation, then contact site 81A～81H is along sliding on the bottom surface 21F at the recess 21B of housing 21 on the direction D1 of circumference 21E, and signalling contact 23A～23F, 24A～24F and 22 contacts of common contact also separate.Especially, contact site 81A, 81C, 81E, 81G are sliding on bottom surface 21F, signalling contact 23A～23F, the 24A～24F and on the common contact 22 along circumference 21E.Circular arc central angle along the common contact 22 that circumference 21E disposes is that angular range A22 is bigger than 90 degree.Thus, no matter the angle position of slip brush 8 how, among contact site 81A～81H at least two contacts with common contact 22, that is, slip brush 8 contacts with contact 22 jointly.
The angular range A23 that disposes signalling contact 23A～23F is littler than 90 degree, and the angular range A24 that disposes signalling contact 24A～24F is also little than 90 degree.Contact site 81A, 81B simultaneously with signalling contact 23A～23F, 24A～24F and common contact 22 in one contact.Similarly, contact site 81C, 81D simultaneously with signalling contact 23A～23F, 24A～24F and common contact 22 in one contact.Similarly, contact site 81E, 81F simultaneously with signalling contact 23A～23F, 24A～24F and common contact 22 in one contact.Similarly, contact site 81G, 81H simultaneously with signalling contact 23A～23F, 24A～24F and common contact 22 in one contact.Because four contact site 81A, 81C, 81E, 81G are with the angle intervals settings of 90 degree and four contact site 81B, 81D, 81F, the 81H angle intervals settings with 90 degree, when making slip brush 8 revolve three-sixth turn so make operating axis 6 revolve three-sixth turn, six actions that signalling contact 23A～23F carries out respectively being connected, separating via slip brush 8 and common contact 22 for four times repeatedly.Because signalling contact 23A～23F is as signalling contact pattern 23 and mutual conduction, so by making operating axis 6 revolve three-sixth turn, signalling contact pattern 23 carries out 24 actions that are connected, separate with common contact 22 repeatedly.Similarly, as if making operating axis 6 revolve three-sixth turn and make slip brush 8 revolve three-sixth turn, then six actions that signalling contact 23A～23F carries out respectively being connected, separating via slip brush 8 and common contact 22 for four times repeatedly.Because signalling contact 24A～24F is as signalling contact pattern 24 and mutual conduction, so by making operating axis 6 revolve three-sixth turn, signalling contact pattern 24 carries out 24 actions that are connected, separate with common contact 22 repeatedly.Therefore, by making operating axis 6 revolve three-sixth turn, utilize conducting between common contact 22 and the signalling contact pattern 23, non-conduction, output has the square wave A1 of 24 peak values between terminal 11A, 11C, by the conducting between common contact 2 and the signalling contact pattern 4, non-conduction, output has the square wave A2 of 24 peak values between terminal 11B, 11C.
Make the operation rotating disk rotation that is installed on operating axis 6, to controllers such as microcomputer input square wave A1, A2.Rotary manipulation shaft encoder 1001 is connected with controller, for example is used for the volume adjusting of automobile audio etc.At this moment, controller is the direction of rotation and the anglec of rotation of operating axis 6 by square wave A1, A2 detecting operation rotating disk, the volume of Control of Automobile sound equipment.
Fig. 5 represents square wave A1, the A2 of rotary encoder 1001 output, respectively by in connection, the disconnection of the switch that forms between common contact 22 and the signalling contact pattern 23, represent square wave A1, A2 in connection, the disconnection of the switch that forms between contact 22 and the signalling contact pattern 24 jointly.Angle position and the wide cut of setting signal contact 23A～23F, 24A～24F are so that square wave A1, A2 are with the phase difference output of 90 degree.By the combination of square wave A1, A2, produce the angle part θ 1 that (1) square wave A1 connects, square wave A2 disconnects; (2) the angle part θ 2 that all connects of square wave A1, A2; (3) the angle part θ 3 that square wave A1 disconnects, square wave A2 connects; (4) angle part θ 4 these four angle part θ 1～θ 4 of all disconnecting of square wave A1, A2.Control part calculates the number of peaks of square wave A1, A2 with the direction of rotation of the order decision operation axle 6 of angle part θ 1～θ 4 generations.Control part is controlled controlling object by direction of rotation and number of peaks.When controlling object was the volume of automobile audio, control part decided the change direction that improves or reduce volume by direction of rotation, decided variable quantity by the quantity of peak value, made the variable quantity of volume change decision on the change direction of decision.
The shape of decision signalling contact 23A～23F, 24A～24F in the rotary coder 1001 of execution mode is with desirable square wave A501, the A502 shown in the output map 14A.Fig. 6 is that (23B～23F, 24A～24F) are along the profile of circumference 21E for signalling contact 23A.Have on the same plane that is positioned at the bottom surface 21F of the recess 21B of housing 21 and the mode of the upper surface 31 that exposes with signalling contact 23A, signalling contact 23A (signalling contact pattern 3) is imbedded the bottom surface 21F of housing 21.The length of angle part θ 1～θ 4 shown in Figure 5 exists with ... along the signalling contact 23A of the direction D1 of circumference 21E (the width L11 of the upper surface 31 of 23B～23F, 24A～24F).(23B～23F, 24A～24F) also have side 51 that is connected with upper surface 31 with bight 53 and the side 52 that is connected with upper surface 31 with bight 54 to signalling contact 23A.Bight 53,54 is positioned at an opposite side mutually with respect to upper surface 31. Side 51,52 is positioned at an opposite side and mutually opposed on direction D1 mutually.Bight 53,54 is positioned at circumference 21E and goes up and contact with contact site 81A, 81C, 81E, the 81G of slip brush 8.Bight 53,54 is the right angle.Signalling contact 23A also has the smooth lower surface 55 of upper surface 31 opposition sides.Lower surface 55 has the width L3 on direction D1.In that the big and cross section along circumference 21E signalling contact 23A has trapezoidal shape in fact than the width L3 of lower surface 55 along the width L11 of the upper surface on the direction D1 of circumference 21E 31.51,52 are respectively equipped with recess 51A, 52A in the side.The resin material that forms housing 21 enters recess 51A, 52A, and (23B～23F, 24A～24F) the bottom surface 21F from housing 21 is moved upward to prevent to be embedded in the signalling contact 23A of bottom surface 21F of housing 21 thus.
In rotary coder 1001, do not produce the 14B of the limit portion of collapsing of existing rotary coder 501 shown in Figure 15, ( bight 53,54 of 23B～23F, 24A～24F) is the right angle to signalling contact 23A, and therefore, the resin material that forms housing 21 does not cover on the upper surface 31 of signalling contact 23A.Therefore, can be identical at the width L11 of the upper surface 31 of direction D1 with the width L2 of signalling contact, produce the deviation of width L11 hardly.
Manufacture method to rotary encoder 1001 describes.
Fig. 7 A, Fig. 7 B are the profiles of manufacture method of the signalling contact pattern 23,24 of expression rotary encoder 1001.Shown in Fig. 7 A, metallic plates 61 such as brass sheet are set on stamping-out platform 25, shown in Fig. 7 B, carry out stamping-out processing from the upper surface 61A of metallic plate 61 by blanking die 26.By the processing of this stamping-out make respectively become signalling contact 23A, 23B partly finish contact 33A, 33B.Partly finish contact 33A (33B) and have the upper surface 62 of the upper surface 31 that becomes signalling contact 23A (23B) and the lower surface 64 of upper surface 62 opposition sides.When upper surface 61A carried out stamping-out to metallic plate 61, the side 63 that will partly be finished contact 33A (33B) by blanking die 26 was to 64 direction D2 stretches from upper surface 62 towards lower surface by blanking die 26.Thus, produce the 27A of limit portion that collapses, produce the outstanding 27B of burr portion in the bight that connects lower surface 64 and side 63 to direction D2 in the bight that upper surface 62 is connected with side 63.The 27A of limit portion carries out chamfering and forms fillet to collapsing.
Fig. 8 is the vertical view that becomes the contact board hoop (Off one プ) 30 of signalling contact pattern 23,24 and common contact 22.Shown in Fig. 7 A, Fig. 7 B, carry out stamping-out and obtain contact board hoop 30 by blanking die 26 and 25 pairs of metallic plates of stamping-out platform 61.Contact board hoop 30 has a plurality of contact board 30C and the housing 30B that is connected with a plurality of contact board 30C.Each 30C of contact portion is provided with a plurality of guide hole 30A with predetermined distance having on the housing 30B that partly finishes contacts patterns 33,34 and partly finish contact 32.Partly finish contacts patterns 33,34 and partly finish contact 32 and become signalling contact pattern 23,24 and common contact 22 respectively.Partly finish contacts patterns 33 have become signalling contact 23A～23F respectively partly finish contact 33A～33F.Partly finish contacts patterns 34 have become signalling contact 24A～24F respectively partly finish contact 34A～34F.Partly finish partly finish contact 33A, the 33B shown in contact 33C～33F, 34A～34F and Fig. 7 B and similarly have 27A of the limit of collapsing portion and the 27B of burr portion.
Fig. 9 A and Fig. 9 B are the expression signalling contact 23A (profiles of the manufacture method of 23B～23F, 24A～24F).(33B～33F, 34A～34F) are shaped by mould 28,29, become signalling contact 23A (23B～23F, 24A～24F) respectively partly to finish contact 33A.Mould 29 is pushed the lower surface 64 of partly finishing contact 33A.Upper surface 29D at mould 29 is provided with recess 29C.Recess 29C has flat bottom surface 29A and from bottom surface 29A and upper surface 29D connection inclined 29B.Inclined-plane 29B clips bottom surface 29A and is positioned at mutual opposition side.The central authorities that bottom surface 29A will partly finish the lower surface 64 of contact 33A push upward towards upper surface 62.Inclined-plane 29B with the 27B of burr portion towards the center of partly finishing contact 33A to the inside the top push.Lower surface 28D at mould 28 is provided with recess 28C.Recess 28C has flat bottom surface 28A and the smooth side 28B that is connected with lower surface 28D from bottom surface 28A.Bottom surface 28A will partly finish the upper surface 62 of contact 33A and push downwards towards lower surface 64.The bight that connects bottom surface 28A and side 28C is the right angle, forms right angle forming section 28B.
Shown in Fig. 9 B, partly finish contact 33A and make signalling contact 23A by in recess 28C, the 29C of mould 28,29, pushing.Push the 27B of burr portion by the inclined-plane 29B by mould 29 from the below towards the center of partly finishing contact 33A, partly finishing the right angle that contact 33A is pressed against mould 28 is on the right angle forming section 28B.Thus, the bight 53 of upper surface 31 becomes shaped signal contact 23A squarely.In addition, by partly finishing contact 33A by mould 28,29 crampings, 51,52 form recess 51A, 52A in the side.Signalling contact 23B～23F, 24A～24F also with signalling contact 23A similarly, be shaped by mould 28,29 and partly finish contact 33B～33F, 34A～34F and make.
Then, by molded of resin material and insert shaping contact board hoop 30, afterwards, from signalling contact pattern 33,34 and common contact 22 and terminal 11A～11C cut off and separate housing 30B, thus, make housing 21.Like this, by by molded of resin material and insert after shaped signal contact 23A～23F, the 24A～24F, from signalling contact pattern 33,34 and common contact 22 and terminal 11A～11C cut off and separate housing 30B and make housing 21.
As shown in Figure 2, crush with projection, slip brush 8 is fixed on the lower surface of operating axis 6 by the riveted joint that will be located at operating axis 6 lower surfaces.Crush with projection by the riveted joint that will be located at bearing 9 lower surfaces, ratchet spring 10 is fixed on the lower surface of bearing 9.Then, on housing 21, stack the operating axis 6 that is fixed with slip brush 8, the bearing 9 that is fixed with ratchet spring 10.Afterwards, carry out clamping to bottom surface 21G, the utilization of housing 21 accessory 7 being installed on the bearing 9, it is fixing with housing 21 by the 7A of foot accessory 7 will to be installed, and makes rotary encoder 1001 thus.
In the rotary coder 1001 of execution mode, (the width L11 of the upper surface 31 that the bottom surface 21F of the recess 21B of the housing 21 of 23B～23F, 24A～24F) exposes is identical with the width L2 of signalling contact 23A, is shaped exactly by the recess 28C of mould 28 from signalling contact 23A.Therefore, the width setup of angle part θ 1～θ 4 shown in Figure 5 can be become Rack, control part is reading angular part θ 1～θ 4 reliably, accurately the direction of rotation of measuring operation axle 6 and rotation amount.
In execution mode, the bight 53,54 of the upper surface 31 of signalling contact 23A～23F, the 24A～24F of decision signal accuracy can form the right angle easily and accurately by mould 28,29.Therefore, the interval between signalling contact 23A～23F, the 24A～24F can be dwindled, rotary coder 1001 can be constituted small-sized and accurately.
In addition, in execution mode, the term of directions such as expression " upper surface ", " lower surface ", " top ", " below " is represented or not absolute directions such as above-below direction by the relative direction of the determining positions of the component parts of rotary coder 1001.
Claims (2)
1. rotary encoder comprises:
Housing with the insulating resin system on surface;
Rotatable operating axis;
Conductivity slip brush, it is fixed on the described operating axis, has along with the rotation of described operating axis at the described surface of described housing, the contact site that slides on predetermined circumference;
Signalling contact, it is embedded in the described surface of described housing,
Described signalling contact has:
The upper surface in the same plane with the described surface of described housing;
First side that is positioned on the described predetermined circumference and is connected with described upper surface with first bight at right angle;
Be positioned on the described predetermined circumference and be connected with described upper surface, be positioned at second side of the described first side thereof opposite side with second bight at right angle;
Be positioned at the opposition side of described upper surface and along having than described upper surface at lower surface on the direction of described predetermined circumference along the little width of the width on the direction of described predetermined circumference.
2. the manufacture method of a rotary encoder comprises following step:
Carry out stamping-out in the surface from it by the metallic plate that will have upper surface, make have upper surface and a lower surface partly finish the contact;
Prepare first mould, this first mould has the lower surface that is provided with recess, and the described recess of described first mould has the side that bottom surface and bight with the right angle are connected with described bottom surface;
Prepare second mould, this second mould has upper surface, is provided with recess at the described upper surface of described second mould, and this recess has the inclined-plane that is positioned at mutual opposition side of bottom surface and the described upper surface that is connected described bottom surface and described second mould;
Be positioned at the mode that the described recess of described first mould, described bight of partly finishing the described lower surface of contact are pushed by the described inclined-plane of the described recess of described second mould with the described described upper surface of partly finishing the contact, push by described first mould and described second mould and describedly partly finish the contact and make signalling contact with upper surface;
By the described signalling contact that is shaped by molded of resin material, make and be embedded with described signalling contact and have housing with the described upper surface of described signalling contact surface in the same plane;
The operating axis of rotation is set;
The slip brush is set, and this slip brush has contact site, and this contact site is accompanied by the rotation of described operating axis and slides at the described upper surface of described signalling contact and the described surface of described housing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP008865/08 | 2008-01-18 | ||
| JP2008008865A JP5067173B2 (en) | 2008-01-18 | 2008-01-18 | Manufacturing method of rotary operation type encoder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101488412A CN101488412A (en) | 2009-07-22 |
| CN101488412B true CN101488412B (en) | 2011-05-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100010214A Expired - Fee Related CN101488412B (en) | 2008-01-18 | 2009-01-19 | Rotary encoder and method of manufacturing the same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US7791504B2 (en) |
| JP (1) | JP5067173B2 (en) |
| CN (1) | CN101488412B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5446801B2 (en) * | 2009-12-07 | 2014-03-19 | パナソニック株式会社 | Rotating electronic components |
| JP2011141194A (en) * | 2010-01-07 | 2011-07-21 | Alps Electric Co Ltd | Rotary electrical component |
| CN201688854U (en) * | 2010-05-31 | 2010-12-29 | 东莞市长泰尔电子有限公司 | Non-block encoder |
| KR102068619B1 (en) * | 2018-09-14 | 2020-01-21 | 엘지전자 주식회사 | Rotary switch |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855521A (en) * | 1972-05-24 | 1974-12-17 | Sony Corp | Transformer having switch means for causing series or parallel connection between plural primary or secondary winding |
| CN1281234A (en) * | 1999-07-16 | 2001-01-24 | 达方电子股份有限公司 | Knob wheel and its making method |
| JP2006338952A (en) * | 2005-05-31 | 2006-12-14 | Alps Electric Co Ltd | Switch, and its manufacturing method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01300548A (en) * | 1988-05-27 | 1989-12-05 | Mitsubishi Electric Corp | Manufacture of heat-dissipating substrate for semiconductor device |
| JP3726400B2 (en) * | 1997-02-25 | 2005-12-14 | セイコーエプソン株式会社 | Rotary switch device and tester equipped with the same |
| JP3708307B2 (en) | 1997-10-28 | 2005-10-19 | 松下電器産業株式会社 | Rotating operation type electronic component with push switch and manufacturing method thereof |
| JP4075590B2 (en) * | 2002-11-27 | 2008-04-16 | 松下電器産業株式会社 | Rotating electronic components |
| JP4375055B2 (en) * | 2004-02-26 | 2009-12-02 | パナソニック株式会社 | Rotary encoder |
| JP4322158B2 (en) * | 2004-03-31 | 2009-08-26 | 帝国通信工業株式会社 | Switch contact plate manufacturing method and switch board manufacturing method |
-
2008
- 2008-01-18 JP JP2008008865A patent/JP5067173B2/en not_active Expired - Fee Related
-
2009
- 2009-01-13 US US12/352,745 patent/US7791504B2/en not_active Expired - Fee Related
- 2009-01-19 CN CN2009100010214A patent/CN101488412B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3855521A (en) * | 1972-05-24 | 1974-12-17 | Sony Corp | Transformer having switch means for causing series or parallel connection between plural primary or secondary winding |
| CN1281234A (en) * | 1999-07-16 | 2001-01-24 | 达方电子股份有限公司 | Knob wheel and its making method |
| JP2006338952A (en) * | 2005-05-31 | 2006-12-14 | Alps Electric Co Ltd | Switch, and its manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5067173B2 (en) | 2012-11-07 |
| CN101488412A (en) | 2009-07-22 |
| JP2009170328A (en) | 2009-07-30 |
| US20090184848A1 (en) | 2009-07-23 |
| US7791504B2 (en) | 2010-09-07 |
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